WO2018208102A1 - Procédé et appareil permettant de fournir un service de diffusion et de multidiffusion de contenu multimédia - Google Patents

Procédé et appareil permettant de fournir un service de diffusion et de multidiffusion de contenu multimédia Download PDF

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Publication number
WO2018208102A1
WO2018208102A1 PCT/KR2018/005381 KR2018005381W WO2018208102A1 WO 2018208102 A1 WO2018208102 A1 WO 2018208102A1 KR 2018005381 W KR2018005381 W KR 2018005381W WO 2018208102 A1 WO2018208102 A1 WO 2018208102A1
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WO
WIPO (PCT)
Prior art keywords
qoe
mode
embms
transmission
evaluated
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PCT/KR2018/005381
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English (en)
Inventor
Sridharan NATARAJAN
Sudheer Kumar HUNDI
Chandan Swarup PATRA
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Samsung Electronics Co., Ltd.
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Publication date
Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.
Priority to CN201880031066.3A priority Critical patent/CN110651489B/zh
Publication of WO2018208102A1 publication Critical patent/WO2018208102A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present disclosure relates generally to wireless communications systems in long term evolution (LTE) networks, and more particularly, to a method and apparatus for multimedia broadcast multicast service (MBMS) on demand (MooD) service.
  • LTE long term evolution
  • MBMS multimedia broadcast multicast service
  • mood mood
  • FIG. 1 is a system diagram illustrating an exemplary MooD deployment scenario for providing a particular service to a user device, according to the conventional art.
  • a user demand measurement for a particular service is performed based on consumption reporting received from a MooD capable user equipment (UE).
  • the consumption reporting of the MooD capable UE is received by a consumption reporting server (CRS) 101 as shown in FIG.1
  • the consumption reporting is then processed at an e-scheduler 103.
  • the e-scheduler 103 instructs a broadcast multicast service center (BM-SC) 105 to host the particular service to other UEs whether in a broadcast mode or a unicast mode.
  • BM-SC broadcast multicast service center
  • the particular service to be broadcast or unicast is decided based on a threshold limit set at the BM-SC 105. For example, if a particular service is consumed by more than 100 users via a MooD capable UE in the unicast mode, then the network identifies that the particular service has gained in popularity and decides to switch the service from the unicast mode to the broadcast mode.
  • a service is unicast to two user groups, namely user group 1 and user group 2, where user group 1 has a good experience, and user group 2 has an average experience.
  • a hybrid repeat request (HARQ) mechanism provides required additional gain which improves the user experience in unicast mode.
  • HARQ hybrid repeat request
  • the MooD switches the transmission of service from unicast mode to broadcast mode.
  • the experience of user group 2 deteriorates and become worse for a few users due to a lack of a HARQ mechanism in broadcast mode.
  • a service 2 is considered popular as per measured user count, and therefore, the MooD switches mode of transmission from unicast mode to broadcast mode to transmit service 2.
  • the selection of service 2 when transmitted in broadcast mode worsens the user experience and eventually the users will stop viewing the content.
  • service 1 instead of broadcasting service 2, service 1 should have been broadcast for providing a better user experience.
  • An aspect of the present disclosure provides a method and apparatus in which consumption reporting is able to identify a quality of reception of data received by a UE associated with a user and decide whether the UE should be considered for a unicast to broadcast transmission range for increasing the quality of experience (QoE) for users.
  • QoE quality of experience
  • Another aspect of the present disclosure provides a method and apparatus of segregating users into multiple groups which continue to receive unicast transmission from content delivery networks (CDNs) and switched under an evolved MBMS (eMBMS) scheme to broadcast.
  • CDNs content delivery networks
  • eMBMS evolved MBMS
  • Another aspect of the present disclosure provides a method and apparatus for MooD service.
  • a method for providing a multimedia broadcast multicast service (MBMS) in a wireless communication system comprises obtaining information on a quality of experience (QoE) evaluated for each evolved MBMS (eMBMS) from among a plurality of eMBMSs in a service region, the QoE being evaluated based on a report from each user equipment (UE) receiving data of the each eMBMS, and determining, based on the information on the evaluated QoE, whether to switch a transmission mode for transmission of at least one of eMBMS content associated with the plurality of eMBMSs.
  • QoE quality of experience
  • an apparatus for providing a multimedia broadcast multicast service (MBMS) in a wireless communication system comprises a communication interface configured to communicate with other network entity, and at least one processor coupled with the communication interface and configured to obtain information on a quality of experience (QoE) evaluated for each evolved MBMS (eMBMS) from among a plurality of eMBMSs in a service region, the QoE being evaluated based on a report from each user equipment (UE) receiving data of the each eMBMS, and determine, based on the information on the evaluated QoE, whether to switch a transmission mode for transmission of at least one of eMBMS content associated with the plurality of eMBMSs.
  • QoE quality of experience
  • a method for receiving a multimedia broadcast multicast service (MBMS) in a wireless communication system comprises receiving eMBMS content in a first transmission mode in a service region, transmitting a quality of experience (QoE) report for the eMBMS content, and continuously receiving the eMBMS content in the first transmission mode or a second transmission mode in the service region in response to the QoE report, wherein the QoE for each eMBMS is evaluated based on the QoE report, and wherein whether to switch the transmission mode for transmission of the eMBMS content is determined based on the evaluated QoE.
  • QoE quality of experience
  • an apparatus for receiving a multimedia broadcast multicast service (MBMS) in a wireless communication system comprises a transceiver, and a processor coupled with the transceiver and configured to receive eMBMS content in a first transmission mode in a service region, transmit a quality of experience (QoE) report for the eMBMS content, and continuously receive the eMBMS content in the first transmission mode or a second transmission mode in the service region in response to the QoE report, wherein the QoE for each eMBMS is evaluated based on the QoE report, and wherein whether to switch the transmission mode for transmission of the eMBMS content is determined based on the evaluated QoE.
  • QoE quality of experience
  • a method for multimedia broadcast multicast services (MBMS) on demand (MooD) service includes detecting in a service region a first mode of transmission of at least one of an eMBMS content associated with a plurality of eMBMS services, evaluating a QoE for each eMBMS service from among the plurality of eMBMS services in the service region, and switching the first mode of transmission of at least one of an eMBMS content to a second mode of transmission if the evaluated QoE is above a predetermined threshold.
  • a first mode is a unicast mode and a second mode is a broadcast mode.
  • a method includes retaining a transmission in a first mode for at least one eMBMS content if an evaluated QoE is below a predetermined threshold.
  • a method in switching a transmission, includes calculating a mean opinion score (MOS) of a currently played eMBMS content from QoE for each group of service recipients, applying the estimated MOS to a prediction algorithm to calculate a probability score, and switching the transmission of the currently played eMBMS content to a second mode from a first mode or vice-versa based on the calculated probability score.
  • MOS mean opinion score
  • a method includes detecting in a service region, availability of one eMBMS service for transmission of eMBMS content to a plurality of users in the service region, and segregating the plurality of users into a first group of users and a second group of users based on an MOS for deciding a mode of transmission of eMBMS service from a first mode to a second mode.
  • a first group of users continue to watch an eMBMS service in a first mode if an MOS value of an eMBMS content deteriorates to less or equal than a threshold value (or less than a threshold value).
  • a second group of users receives an eMBMS service in a second mode if an MOS value of an eMBMS content is greater than a threshold value (or greater or equal than a threshold value).
  • a method includes dynamically controlling physical broadcast resource allocation between different services based on a calculated MOS value.
  • a system in accordance with another aspect of the present disclosure, includes a QoE processing server configured to detect in a service region a first mode of transmission of at least one of an eMBMS content associated with a plurality of eMBMS services, evaluate a QoE for each eMBMS service from among the plurality of eMBMS services in the service region, and switch the first mode of transmission of at least one of the eMBMS content to a second mode of transmission if the evaluated QoE is above a predetermined threshold.
  • FIG. 1 is a system diagram of an MooD for providing a service to a user device
  • FIGs. 2a and 2b are illustrations of providing a service to a user device
  • FIG. 3 is a flowchart of a method of an MooD based on user behavior modeling, according to an embodiment of the present disclosure
  • FIG. 4 is a block diagram of a system for deciding to switch mode of transmission of eMBMS content from unicast mode to broadcast mode, according to an embodiment of the present disclosure
  • FIG. 5 is a flow diagram of switching a transmission mode of eMBMS content being transmitted to a plurality of user devices, according to an embodiment of the present disclosure
  • FIG. 6 is an illustration of a method of segregating UEs based on MOS for eMBMS content received from a single eMBMS service provided to a group of UEs present in a region, according to an embodiment of the present disclosure.
  • FIG. 7 is an illustration of a method of dynamically controlling physical broadcast resource allocation between different services, according to an embodiment of the present disclosure.
  • the present disclosure describes a method for MooD service.
  • the MooD service allows service providers to host a particular service such as an evolved MBMS content in broadcast mode or unicast mode for efficient resource utilization.
  • switching a transmission from unicast to broadcast or vice versa is based on user demand and content usage.
  • the user demand measurement is performed based on consumption reporting received from users at a CRS and processed at an e-scheduler.
  • an MOS for the content transmitted by the service provider is obtained from each user to decide on switching the transmission from unicast to broadcast and vice versa.
  • the reception reporting is fed on QoE parameters experienced by a user to external servers at runtime. The following are the factors that account for a QoE experienced by users.
  • a linear regression based model is created to calculate the MOS of a content that reflects the QoE experienced by a user.
  • the range of the MOS varies from 1(Low) - 5(High) as shown in Table 1 below.
  • FIG. 3 is a flowchart of a method of an MooD service, according to an embodiment of the present disclosure.
  • the step by step procedure for providing an MooD service is described herein as follows. If there are two modes of transmission, namely a first mode and a second mode, where the first mode of transmission corresponds to a unicast mode and the second mode of transmission corresponds to a broadcast mode.
  • a first mode of transmission of an eMBMS content associated with a plurality of eMBMS services is detected in a service region.
  • a QoE is evaluated for each eMBMS service from among a plurality of eMBMS services in the service region. This is performed to determine which service is having high QoE among the plurality of services present in that region.
  • the plurality of services may be ranked or sorted in ascending order for deciding on switching the mode of transmission for those services.
  • the mode of transmission is switched for the at least one of an eMBMS content to a second mode if the evaluated QoE is above a predetermined threshold. However, if the evaluated QoE is below a predetermined threshold, then the transmission of the at least one eMBMS service is retained in a first mode.
  • the first mode and second mode of transmission correspond to a unicast mode and a broadcast mode, respectively.
  • FIG. 4 is a block diagram of a system for deciding to switch mode of transmission of eMBMS content from unicast mode to broadcast mode, according to one embodiment.
  • the system includes a content delivery network (CDN) 402, a BM-SC 404, a CRS 406, a QoE processing server 408 and a plurality of UEs 410.
  • the CRS 406 further includes a consumption report processor 406a and a transmission mode deciding processor 406b.
  • the QoE processing server 408 further includes an MOS calculating module 408a and a user behavior estimating module 408b. The functions of each block are described below in greater detail.
  • the CDN 402 is adapted for delivering eMBMS content to a plurality of UEs 410 via the BM-SC 404.
  • the consumption/reception report associated with the eMBMS content is obtained from the plurality of UEs 410 and is sent to the CRS 406.
  • the obtained consumption/reception report is processed by the consumption report processor 406a in the CRS 406.
  • the consumption report processor 406a analyzes a QoE experienced by users via the QoE processing server 408, where the QoE processing server 408 calculates MOS values for the eMBMS content watched by the plurality of UEs 410.
  • the QoE processing server 408 uses user behavior estimating module 408b to calculate user behavior on whether a user is likely to continue watching the eMBMS content in the future.
  • the output of the CRS 406 and the QoE processing server 408 is provided to the BM-SC 404 to switch the mode of transmission of eMBMS content based on the MOS obtained for the eMBMS content. If the obtained MOS are high, then the BM-SC 404 switches the mode of transmission from unicast mode to broadcast mode.
  • FIG. 5 is a flow diagram of switching of a transmission mode of eMBMS content being transmitted to a plurality of user devices, according to an embodiment of the present disclosure.
  • a plurality of UEs namely UE-1, UE-2, and UE-3, 502 present in a certain region, is in communication with a BM-SC 506 via an MBMS-gateway (GW) 504.
  • the BM-SC 506 hosts an eMBMS content in unicast mode for the delivery of eMBMS content to the plurality of UEs 502 via the MBMS-GW 504 at step 501 and step 503.
  • the BM-SC 506 detects a high attach rate for the eMBMS content delivered in unicast mode. Therefore, BM-SC 506 initiates QoE measurement to be performed by the plurality of UEs 502 for the eMBMS content delivered to the plurality of UEs 502 at step 507.
  • the plurality of UEs 502 To perform the QoE measurement, the plurality of UEs 502 consider at least one of the factors including, but not limited to initial re-buffering duration, re-buffering frequency, mean re-buffering time, successive loss of RTP packets, frame rate deviation, jitter duration, content access/switch time, network resource, average codec bit-rate, and codec information and the QoE processing server 508 calculates(or evaluates) an MOS value which reflects the QoE experienced by the plurality of UEs 502.
  • the QoE report is then sent to a QoE processing server 508 for further processing.
  • the QoE processing server 508 also determines user behavior, and provides both the evaluated QoE (MOS) and user behavior to a CRS 510.
  • the CRS 510 decides whether the mode of transmission of eMBMS content is to be switched from unicast mode to broadcast mode at step 513. Based on the decision, at step 515, the CRS 510 informs a type of mode and list of UEs for which the mode of transmission is to be changed to the QoE processing server 508.
  • the QoE processing server 508 then informs the list of eligible UEs to the BM-SC 506 at step 517.
  • the BM-SC 506 switches the mode of transmission of eMBMS content to the list of UEs (e.g., UE-2 and UE-3) as shown in FIG. 5. It is to be understood that the UE-1 continues to receive the eMBMS content in unicast mode.
  • the plurality of UEs 502 are segregated based on their currently experienced MOS.
  • at least one UE of the plurality of UEs 502 having a relatively high MOS will be segregated into a first group of UE and at least one UE of the plurality of UEs 502 having a relatively low MOS will be segregated into a second group of UE. Therefore, the at least one UE of the plurality of UEs 502 whose MOS is relatively high will receive the eMBMS content in broadcast mode while the at least one UE of the plurality of UEs 502 having low MOS continues to receive the eMBMS content in unicast mode.
  • An exemplary segregation of UEs based on MOS is shown in FIG. 6.
  • FIG. 6 is an illustration of a method of segregating UEs based on MOS for eMBMS content received from a single eMBMS service provided to a group of UEs present in a particular region, according to an embodiment of the present disclosure.
  • a certain region only has one eMBMS service (Service 1) available and transmits only eMBMS content to the group of UEs present in that region.
  • Service 1 eMBMS service
  • the group of UEs 602 is served with an eMBMS content using a first mode (e.g., a unicast mode).
  • a first mode e.g., a unicast mode
  • MOS is calculated for each UE 602 to measure a QoE experienced by users of the UEs.
  • the UEs which are having a high MOS and a low MOS are segregated into a first group of UEs (in panel (1)) and a second group of UEs (in panel (2)).
  • the mode of transmission is switched from unicast mode to broadcast mode for the first group of UEs which are having a high MOS for delivering the eMBMS content via "Service 1."
  • the second group of UEs tend to receive the eMBMS content in unicast mode from "Service 1" as the second group of UEs are having a low MOS. The same is shown in second panel (2) of FIG. 6.
  • FIG. 7 is an illustration of a method of dynamically controlling physical broadcast resource allocation between different services, according to an embodiment of the present disclosure.
  • the MOS experienced by users in a certain service is considered for dynamically controlling physical broadcast resource allocation between different services.
  • UEs are segregated into different groups and, accordingly, hardware resources 702 are allocated by a service provider for each group of UEs to watch respective eMBMS content 704.
  • the present disclosure provides dynamic allocation of physical resource blocks (PRBs) for MBMS channels (MBMS traffic channel (MTCH) and MBMS control channel (MCCH)) for each group of UEs based on the MOS of each group of UEs instead of having static allocation of the same PRBs for all MBMS channels.
  • PRBs physical resource blocks
  • MTCH MBMS traffic channel
  • MCCH MBMS control channel

Abstract

L'invention concerne un procédé permettant de fournir un service de diffusion et de multidiffusion de contenu multimédia (MBMS) dans un système de communication sans fil et un appareil associé. Le procédé comprend l'obtention d'informations sur une qualité d'expérience (QoE) évaluée pour chaque MBMS évolué (eMBMS) parmi une pluralité d'eMBMSs dans une zone de service, la QoE étant évaluée sur la base d'un rapport provenant de chaque équipement utilisateur (UE) recevant des données de chaque eMBMS, et déterminant, sur la base des informations sur la QoE évaluée, s'il convient de commuter un mode de transmission pour la transmission d'au moins un contenu eMBMS associé à la pluralité de services eMBMS.
PCT/KR2018/005381 2017-05-11 2018-05-10 Procédé et appareil permettant de fournir un service de diffusion et de multidiffusion de contenu multimédia WO2018208102A1 (fr)

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